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| author | Zaheer Abbas Merali <zaheer@localhost.localdomain> | 2009-04-10 01:11:01 +0200 |
|---|---|---|
| committer | Dave Robillard <dave@drobilla.net> | 2009-05-03 12:03:16 -0400 |
| commit | ef66f84bb4cd7238d961894a6a39f4ee8a66e606 (patch) | |
| tree | 7af52f07f177e0fdeffef438ec845ae907a83894 /gst | |
| parent | 0f91b42aaf076d7118588dea58fddf92322e4edf (diff) | |
| download | gst-plugins-bad-ef66f84bb4cd7238d961894a6a39f4ee8a66e606.tar.gz gst-plugins-bad-ef66f84bb4cd7238d961894a6a39f4ee8a66e606.tar.bz2 gst-plugins-bad-ef66f84bb4cd7238d961894a6a39f4ee8a66e606.zip | |
hack for itvhd sid to detect mpeg1 as h264
Diffstat (limited to 'gst')
| -rw-r--r-- | gst/mpegdemux/gstmpegtsdemux.c | 2816 |
1 files changed, 0 insertions, 2816 deletions
diff --git a/gst/mpegdemux/gstmpegtsdemux.c b/gst/mpegdemux/gstmpegtsdemux.c deleted file mode 100644 index 59b51a3a..00000000 --- a/gst/mpegdemux/gstmpegtsdemux.c +++ /dev/null @@ -1,2816 +0,0 @@ - /* - * This library is licensed under 2 different licenses and you - * can choose to use it under the terms of either one of them. The - * two licenses are the MPL 1.1 and the LGPL. - * - * MPL: - * - * The contents of this file are subject to the Mozilla Public License - * Version 1.1 (the "License"); you may not use this file except in - * compliance with the License. You may obtain a copy of the License at - * http://www.mozilla.org/MPL/. - * - * Software distributed under the License is distributed on an "AS IS" - * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the - * License for the specific language governing rights and limitations - * under the License. - * - * LGPL: - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - * The Original Code is Fluendo MPEG Demuxer plugin. - * - * The Initial Developer of the Original Code is Fluendo, S.L. - * Portions created by Fluendo, S.L. are Copyright (C) 2005 - * Fluendo, S.L. All Rights Reserved. - * - * Contributor(s): Wim Taymans <wim@fluendo.com> - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <string.h> -#include <stdlib.h> - -#ifdef USE_LIBOIL -#include <liboil/liboil.h> -#endif - -#include "gstmpegdefs.h" -#include "gstmpegtsdemux.h" -#include "flutspatinfo.h" -#include "flutspmtinfo.h" - -#ifndef GST_CHECK_VERSION -#define GST_CHECK_VERSION(major,minor,micro) \ - (GST_VERSION_MAJOR > (major) || \ - (GST_VERSION_MAJOR == (major) && GST_VERSION_MINOR > (minor)) || \ - (GST_VERSION_MAJOR == (major) && GST_VERSION_MINOR == (minor) && \ - GST_VERSION_MICRO >= (micro))) -#endif - -#ifndef GST_BUFFER_IS_DISCONT -#define GST_BUFFER_IS_DISCONT(buffer) \ - (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) -#endif - -GST_DEBUG_CATEGORY_STATIC (gstmpegtsdemux_debug); -#define GST_CAT_DEFAULT (gstmpegtsdemux_debug) - -/* elementfactory information */ -#ifdef USE_LIBOIL -#define LONGNAME "The Fluendo MPEG Transport stream demuxer (liboil build)" -#else -#define LONGNAME "The Fluendo MPEG Transport stream demuxer" -#endif - -#ifndef __always_inline -#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1) -#define __always_inline inline __attribute__((always_inline)) -#else -#define __always_inline inline -#endif -#endif - -#ifndef DISABLE_INLINE -#define FORCE_INLINE __always_inline -#else -#define FORCE_INLINE -#endif - -static GstElementDetails mpegts_demux_details = { - LONGNAME, - "Codec/Demuxer", - "Demultiplexes MPEG2 Transport Streams", - "Wim Taymans <wim@fluendo.com>" -}; - -/* MPEG2Demux signals and args */ -enum -{ - /* FILL ME */ - LAST_SIGNAL -}; - -#define DEFAULT_PROP_ES_PIDS "" -#define DEFAULT_PROP_CHECK_CRC TRUE -#define DEFAULT_PROP_PROGRAM_NUMBER -1 - -/* latency in mseconds */ -#define TS_LATENCY 700 - -enum -{ - PROP_0, - PROP_ES_PIDS, - PROP_CHECK_CRC, - PROP_PROGRAM_NUMBER, - PROP_PAT_INFO, - PROP_PMT_INFO, - PROP_M2TS -}; - -#define VIDEO_CAPS \ - GST_STATIC_CAPS (\ - "video/mpeg, " \ - "mpegversion = (int) { 1, 2, 4 }, " \ - "systemstream = (boolean) FALSE; " \ - "video/x-h264;" \ - "video/x-dirac" \ - ) - -#define AUDIO_CAPS \ - GST_STATIC_CAPS ( \ - "audio/mpeg, " \ - "mpegversion = (int) { 1, 4 };" \ - "audio/x-lpcm, " \ - "width = (int) { 16, 20, 24 }, " \ - "rate = (int) { 48000, 96000 }, " \ - "channels = (int) [ 1, 8 ], " \ - "dynamic_range = (int) [ 0, 255 ], " \ - "emphasis = (boolean) { FALSE, TRUE }, " \ - "mute = (boolean) { FALSE, TRUE }; " \ - "audio/x-ac3;" \ - "audio/x-dts" \ - ) - -static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("video/mpegts") - ); - -static GstStaticPadTemplate video_template = -GST_STATIC_PAD_TEMPLATE ("video_%04x", - GST_PAD_SRC, - GST_PAD_SOMETIMES, - VIDEO_CAPS); - -static GstStaticPadTemplate audio_template = -GST_STATIC_PAD_TEMPLATE ("audio_%04x", - GST_PAD_SRC, - GST_PAD_SOMETIMES, - AUDIO_CAPS); - -static GstStaticPadTemplate private_template = -GST_STATIC_PAD_TEMPLATE ("private_%04x", - GST_PAD_SRC, - GST_PAD_SOMETIMES, - GST_STATIC_CAPS_ANY); - -static void gst_mpegts_demux_base_init (GstMpegTSDemuxClass * klass); -static void gst_mpegts_demux_class_init (GstMpegTSDemuxClass * klass); -static void gst_mpegts_demux_init (GstMpegTSDemux * demux); -static void gst_mpegts_demux_finalize (GstMpegTSDemux * demux); -static void gst_mpegts_demux_reset (GstMpegTSDemux * demux); - -//static void gst_mpegts_demux_remove_pads (GstMpegTSDemux * demux); -static void gst_mpegts_demux_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec); -static void gst_mpegts_demux_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec); - -static gboolean gst_mpegts_demux_is_PMT (GstMpegTSDemux * demux, guint16 PID); - -static gboolean gst_mpegts_demux_sink_event (GstPad * pad, GstEvent * event); -static GstFlowReturn gst_mpegts_demux_chain (GstPad * pad, GstBuffer * buffer); -static gboolean gst_mpegts_demux_sink_setcaps (GstPad * pad, GstCaps * caps); - -static GstClock *gst_mpegts_demux_provide_clock (GstElement * element); -static gboolean gst_mpegts_demux_src_pad_query (GstPad * pad, GstQuery * query); - -static GstStateChangeReturn gst_mpegts_demux_change_state (GstElement * element, - GstStateChange transition); - -static MpegTsPmtInfo *mpegts_demux_build_pmt_info (GstMpegTSDemux * demux, - guint16 pmt_pid); - -static GstElementClass *parent_class = NULL; - -/*static guint gst_mpegts_demux_signals[LAST_SIGNAL] = { 0 };*/ - -GType -gst_mpegts_demux_get_type (void) -{ - static GType mpegts_demux_type = 0; - - if (G_UNLIKELY (!mpegts_demux_type)) { - static const GTypeInfo mpegts_demux_info = { - sizeof (GstMpegTSDemuxClass), - (GBaseInitFunc) gst_mpegts_demux_base_init, - NULL, - (GClassInitFunc) gst_mpegts_demux_class_init, - NULL, - NULL, - sizeof (GstMpegTSDemux), - 0, - (GInstanceInitFunc) gst_mpegts_demux_init, - }; - - mpegts_demux_type = - g_type_register_static (GST_TYPE_ELEMENT, "GstMpegTSDemux", - &mpegts_demux_info, 0); - - GST_DEBUG_CATEGORY_INIT (gstmpegtsdemux_debug, "mpegtsdemux", 0, - "MPEG program stream demultiplexer element"); - } - - return mpegts_demux_type; -} - -static void -gst_mpegts_demux_base_init (GstMpegTSDemuxClass * klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - - klass->sink_template = gst_static_pad_template_get (&sink_template); - klass->video_template = gst_static_pad_template_get (&video_template); - klass->audio_template = gst_static_pad_template_get (&audio_template); - klass->private_template = gst_static_pad_template_get (&private_template); - - gst_element_class_add_pad_template (element_class, klass->video_template); - gst_element_class_add_pad_template (element_class, klass->audio_template); - gst_element_class_add_pad_template (element_class, klass->private_template); - gst_element_class_add_pad_template (element_class, klass->sink_template); - - gst_element_class_set_details (element_class, &mpegts_demux_details); -} - -static void -gst_mpegts_demux_class_init (GstMpegTSDemuxClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - - parent_class = g_type_class_peek_parent (klass); - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - - gobject_class->finalize = (GObjectFinalizeFunc) gst_mpegts_demux_finalize; - gobject_class->set_property = gst_mpegts_demux_set_property; - gobject_class->get_property = gst_mpegts_demux_get_property; - - g_object_class_install_property (gobject_class, PROP_ES_PIDS, - g_param_spec_string ("es-pids", - "Colon separated list of PIDs containing Elementary Streams", - "PIDs to treat as Elementary Streams in the absence of a PMT, " - "eg 0x10:0x11:0x20", DEFAULT_PROP_ES_PIDS, G_PARAM_READWRITE)); - g_object_class_install_property (gobject_class, PROP_CHECK_CRC, - g_param_spec_boolean ("check-crc", "Check CRC", - "Enable CRC checking", DEFAULT_PROP_CHECK_CRC, G_PARAM_READWRITE)); - g_object_class_install_property (gobject_class, PROP_PROGRAM_NUMBER, - g_param_spec_int ("program-number", "Program Number", - "Program number to demux for (-1 to ignore)", -1, G_MAXINT, - DEFAULT_PROP_PROGRAM_NUMBER, G_PARAM_READWRITE)); - - g_object_class_install_property (gobject_class, PROP_PAT_INFO, - g_param_spec_value_array ("pat-info", - "GValueArray containing GObjects with properties", - "Array of GObjects containing information from the TS PAT " - "about all programs listed in the current Program Association " - "Table (PAT)", - g_param_spec_object ("flu-pat-streaminfo", "FluPATStreamInfo", - "Fluendo TS Demuxer PAT Stream info object", - MPEGTS_TYPE_PAT_INFO, G_PARAM_READABLE), G_PARAM_READABLE)); - - g_object_class_install_property (gobject_class, PROP_PMT_INFO, - g_param_spec_object ("pmt-info", - "Information about the current program", - "GObject with properties containing information from the TS PMT " - "about the currently selected program and its streams", - MPEGTS_TYPE_PMT_INFO, G_PARAM_READABLE)); - - g_object_class_install_property (gobject_class, PROP_M2TS, - g_param_spec_boolean ("m2ts_mode", "M2TS(192 bytes) Mode", - "Defines if the input is normal TS ie .ts(188 bytes)" - "or Blue-Ray Format ie .m2ts(192 bytes).", FALSE, G_PARAM_READWRITE)); - - gstelement_class->change_state = gst_mpegts_demux_change_state; - gstelement_class->provide_clock = gst_mpegts_demux_provide_clock; -} - -static void -gst_mpegts_demux_init (GstMpegTSDemux * demux) -{ - GstMpegTSDemuxClass *klass = GST_MPEGTS_DEMUX_GET_CLASS (demux); - - demux->streams = - g_malloc0 (sizeof (GstMpegTSStream *) * (MPEGTS_MAX_PID + 1)); - demux->sinkpad = gst_pad_new_from_template (klass->sink_template, "sink"); - gst_pad_set_chain_function (demux->sinkpad, gst_mpegts_demux_chain); - gst_pad_set_event_function (demux->sinkpad, gst_mpegts_demux_sink_event); - gst_pad_set_setcaps_function (demux->sinkpad, gst_mpegts_demux_sink_setcaps); - gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad); - - demux->elementary_pids = NULL; - demux->nb_elementary_pids = 0; - demux->check_crc = DEFAULT_PROP_CHECK_CRC; - demux->program_number = DEFAULT_PROP_PROGRAM_NUMBER; - demux->packetsize = MPEGTS_NORMAL_TS_PACKETSIZE; - demux->m2ts_mode = FALSE; - demux->sync_lut = NULL; - demux->sync_lut_len = 0; - -#ifdef USE_LIBOIL - oil_init (); -#endif -} - -static void -gst_mpegts_demux_finalize (GstMpegTSDemux * demux) -{ - gst_mpegts_demux_reset (demux); - g_free (demux->streams); - - G_OBJECT_CLASS (parent_class)->finalize (G_OBJECT (demux)); -} - -static void -gst_mpegts_demux_reset (GstMpegTSDemux * demux) -{ - /* Clean up the streams and pads we allocated */ - gint i; - - for (i = 0; i < MPEGTS_MAX_PID + 1; i++) { - GstMpegTSStream *stream = demux->streams[i]; - - if (stream != NULL) { - if (stream->pad) - gst_element_remove_pad (GST_ELEMENT_CAST (demux), stream->pad); - if (stream->ES_info) - gst_mpeg_descriptor_free (stream->ES_info); - - if (stream->PMT.entries) - g_array_free (stream->PMT.entries, TRUE); - if (stream->PMT.program_info) - gst_mpeg_descriptor_free (stream->PMT.program_info); - - if (stream->PAT.entries) - g_array_free (stream->PAT.entries, TRUE); - - switch (stream->PID_type) { - case PID_TYPE_ELEMENTARY: - gst_pes_filter_uninit (&stream->filter); - break; - case PID_PROGRAM_ASSOCIATION_TABLE: - case PID_CONDITIONAL_ACCESS_TABLE: - case PID_TYPE_PROGRAM_MAP: - gst_section_filter_uninit (&stream->section_filter); - break; - } - - g_free (stream); - demux->streams[i] = NULL; - } - } - - if (demux->clock) { - g_object_unref (demux->clock); - demux->clock = NULL; - } -} - -#if 0 -static void -gst_mpegts_demux_remove_pads (GstMpegTSDemux * demux) -{ - /* remove pads we added in preparation for adding new ones */ - /* FIXME: instead of walking all streams, we should retain a list only - * of streams that have added pads */ - gint i; - - if (demux->need_no_more_pads) { - gst_element_no_more_pads ((GstElement *) demux); - demux->need_no_more_pads = FALSE; - } - - for (i = 0; i < MPEGTS_MAX_PID + 1; i++) { - GstMpegTSStream *stream = demux->streams[i]; - - if (stream != NULL) { - - if (GST_IS_PAD (stream->pad)) { - gst_pad_push_event (stream->pad, gst_event_new_eos ()); - gst_element_remove_pad (GST_ELEMENT_CAST (demux), stream->pad); - } - stream->pad = NULL; - - if (stream->PID_type == PID_TYPE_ELEMENTARY) - gst_pes_filter_drain (&stream->filter); - } - } -} -#endif - - -static guint32 crc_tab[256] = { - 0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b, - 0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61, - 0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7, - 0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75, - 0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3, - 0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039, - 0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef, - 0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d, - 0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb, - 0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1, - 0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0, - 0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072, - 0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4, - 0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde, - 0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08, - 0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba, - 0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc, - 0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6, - 0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050, - 0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2, - 0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34, - 0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637, - 0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1, - 0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53, - 0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5, - 0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff, - 0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9, - 0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b, - 0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd, - 0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7, - 0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71, - 0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3, - 0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2, - 0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8, - 0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e, - 0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec, - 0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a, - 0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0, - 0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676, - 0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4, - 0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662, - 0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668, - 0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4 -}; - -/*This function fills the value of negotiated packetsize at sinkpad*/ -static gboolean -gst_mpegts_demux_sink_setcaps (GstPad * pad, GstCaps * caps) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (gst_pad_get_parent (pad)); - gboolean ret = FALSE; - GstStructure *structure = NULL; - gint expected_packetsize = - (demux-> - m2ts_mode ? MPEGTS_M2TS_TS_PACKETSIZE : MPEGTS_NORMAL_TS_PACKETSIZE); - gint packetsize = expected_packetsize; - - structure = gst_caps_get_structure (caps, 0); - - GST_DEBUG_OBJECT (demux, "setcaps called with %" GST_PTR_FORMAT, caps); - - if (!gst_structure_get_int (structure, "packetsize", &packetsize)) { - GST_DEBUG_OBJECT (demux, "packetsize parameter not found in sink caps"); - } - - if (packetsize < expected_packetsize) { - GST_WARNING_OBJECT (demux, "packetsize = %" G_GINT32_FORMAT "is less then" - "expected packetsize of %d bytes", packetsize, expected_packetsize); - goto beach; - } - - /* here we my have a correct value for packet size */ - demux->packetsize = packetsize; - ret = TRUE; - -beach: - gst_object_unref (demux); - return ret; -} - -static FORCE_INLINE guint32 -gst_mpegts_demux_calc_crc32 (guint8 * data, guint datalen) -{ - gint i; - guint32 crc = 0xffffffff; - - for (i = 0; i < datalen; i++) { - crc = (crc << 8) ^ crc_tab[((crc >> 24) ^ *data++) & 0xff]; - } - return crc; -} - -static FORCE_INLINE gboolean -gst_mpegts_is_dirac_stream (GstMpegTSStream * stream) -{ - gboolean is_dirac = FALSE; - - if (stream->stream_type != ST_VIDEO_DIRAC) - return FALSE; - - if (stream->ES_info != NULL) { - guint8 *dirac_desc; - - /* Check for a Registration Descriptor to confirm this is dirac */ - dirac_desc = gst_mpeg_descriptor_find (stream->ES_info, DESC_REGISTRATION); - if (dirac_desc != NULL && DESC_LENGTH (dirac_desc) >= 4) { - if (DESC_REGISTRATION_format_identifier (dirac_desc) == 0x64726163) { /* 'drac' in hex */ - is_dirac = TRUE; - } - } else { - /* Check for old mapping as originally specified too */ - dirac_desc = gst_mpeg_descriptor_find (stream->ES_info, - DESC_DIRAC_TC_PRIVATE); - if (dirac_desc != NULL && DESC_LENGTH (dirac_desc) == 0) - is_dirac = TRUE; - } - } - - return is_dirac; -} - -static FORCE_INLINE gboolean -gst_mpegts_stream_is_video (GstMpegTSStream * stream) -{ - switch (stream->stream_type) { - case ST_VIDEO_MPEG1: - case ST_VIDEO_MPEG2: - case ST_VIDEO_MPEG4: - case ST_VIDEO_H264: - return TRUE; - case ST_VIDEO_DIRAC: - return gst_mpegts_is_dirac_stream (stream); - } - - return FALSE; -} - -static gboolean -gst_mpegts_demux_fill_stream (GstMpegTSStream * stream, guint8 id, - guint8 stream_type) -{ - GstPadTemplate *template; - gchar *name; - GstMpegTSDemuxClass *klass; - GstMpegTSDemux *demux; - GstCaps *caps; - - if (stream->stream_type && stream->stream_type != stream_type) - goto wrong_type; - - demux = stream->demux; - klass = GST_MPEGTS_DEMUX_GET_CLASS (demux); - - name = NULL; - template = NULL; - caps = NULL; - - switch (stream_type) { - case ST_VIDEO_MPEG1: - case ST_VIDEO_MPEG2: - template = klass->video_template; - name = g_strdup_printf ("video_%04x", stream->PID); - caps = gst_caps_new_simple ("video/mpeg", - "mpegversion", G_TYPE_INT, stream_type == ST_VIDEO_MPEG1 ? 1 : 2, - "systemstream", G_TYPE_BOOLEAN, FALSE, NULL); - break; - case ST_AUDIO_MPEG1: - case ST_AUDIO_MPEG2: - template = klass->audio_template; - name = g_strdup_printf ("audio_%04x", stream->PID); - caps = gst_caps_new_simple ("audio/mpeg", - "mpegversion", G_TYPE_INT, 1, NULL); - break; - case ST_PRIVATE_DATA: - /* check if there is an AC3 descriptor associated with this stream - * from the PMT */ - if (gst_mpeg_descriptor_find (stream->ES_info, DESC_DVB_AC3)) { - template = klass->audio_template; - name = g_strdup_printf ("audio_%04x", stream->PID); - caps = gst_caps_new_simple ("audio/x-ac3", NULL); - } else if (gst_mpeg_descriptor_find (stream->ES_info, DESC_DVB_TELETEXT)) { - template = klass->private_template; - name = g_strdup_printf ("private_%04x", stream->PID); - caps = gst_caps_new_simple ("private/teletext", NULL); - } - break; - case ST_PRIVATE_SECTIONS: - case ST_MHEG: - case ST_DSMCC: - break; - case ST_AUDIO_AAC: - template = klass->audio_template; - name = g_strdup_printf ("audio_%04x", stream->PID); - caps = gst_caps_new_simple ("audio/mpeg", - "mpegversion", G_TYPE_INT, 4, NULL); - break; - case ST_VIDEO_MPEG4: - template = klass->video_template; - name = g_strdup_printf ("video_%04x", stream->PID); - caps = gst_caps_new_simple ("video/mpeg", - "mpegversion", G_TYPE_INT, 4, - "systemstream", G_TYPE_BOOLEAN, FALSE, NULL); - break; - case ST_VIDEO_H264: - template = klass->video_template; - name = g_strdup_printf ("video_%04x", stream->PID); - caps = gst_caps_new_simple ("video/x-h264", NULL); - break; - case ST_VIDEO_DIRAC: - if (gst_mpegts_is_dirac_stream (stream)) { - template = klass->video_template; - name = g_strdup_printf ("video_%04x", stream->PID); - caps = gst_caps_new_simple ("video/x-dirac", NULL); - } - break; - case ST_PS_AUDIO_AC3: - template = klass->audio_template; - name = g_strdup_printf ("audio_%04x", stream->PID); - caps = gst_caps_new_simple ("audio/x-ac3", NULL); - break; - case ST_PS_AUDIO_DTS: - template = klass->audio_template; - name = g_strdup_printf ("audio_%04x", stream->PID); - caps = gst_caps_new_simple ("audio/x-dts", NULL); - break; - case ST_PS_AUDIO_LPCM: - template = klass->audio_template; - name = g_strdup_printf ("audio_%04x", stream->PID); - caps = gst_caps_new_simple ("audio/x-lpcm", NULL); - break; - case ST_PS_DVD_SUBPICTURE: - break; - default: - break; - } - if (name == NULL || template == NULL || caps == NULL) - return FALSE; - - stream->stream_type = stream_type; - stream->id = id; - GST_DEBUG ("creating new pad %s", name); - stream->pad = gst_pad_new_from_template (template, name); - gst_pad_use_fixed_caps (stream->pad); - gst_pad_set_caps (stream->pad, caps); - gst_caps_unref (caps); - gst_pad_set_query_function (stream->pad, - GST_DEBUG_FUNCPTR (gst_mpegts_demux_src_pad_query)); - g_free (name); - - return TRUE; - -wrong_type: - { - return FALSE; - } -} - -static FORCE_INLINE gboolean -mpegts_is_elem_pid (GstMpegTSDemux * demux, guint16 PID) -{ - int i; - - /* check if it's in our partial ts pid list */ - for (i = 0; i < demux->nb_elementary_pids; i++) { - if (demux->elementary_pids[i] == PID) { - return TRUE; - } - } - - return FALSE; -} - -static gboolean -gst_mpegts_demux_send_new_segment (GstMpegTSDemux * demux, - GstMpegTSStream * stream, gint64 pts) -{ - GstMpegTSStream *PCR_stream; - GstMpegTSStream *PMT_stream; - GstClockTime time; - guint64 base_PCR; - - /* for the reference start time we need to consult the PCR_PID of the - * current PMT */ - if (demux->current_PMT == 0) - goto no_pmt; - - PMT_stream = demux->streams[demux->current_PMT]; - if (PMT_stream == NULL) - goto no_pmt_stream; - - PCR_stream = demux->streams[PMT_stream->PMT.PCR_PID]; - if (PCR_stream == NULL) - goto no_pcr_stream; - - if (PCR_stream->base_PCR == -1) { - GST_DEBUG_OBJECT (demux, "no base PCR, using last PCR %" G_GUINT64_FORMAT, - PCR_stream->last_PCR); - PCR_stream->base_PCR = PCR_stream->last_PCR; - } else { - GST_DEBUG_OBJECT (demux, "using base PCR %" G_GUINT64_FORMAT, - PCR_stream->base_PCR); - } - if (PCR_stream->last_PCR == -1) { - GST_DEBUG_OBJECT (demux, "no last PCR, using PTS %" G_GUINT64_FORMAT, pts); - PCR_stream->base_PCR = pts; - PCR_stream->last_PCR = pts; - } - base_PCR = PCR_stream->base_PCR; - - time = MPEGTIME_TO_GSTTIME (base_PCR); - - GST_DEBUG_OBJECT (demux, "segment PTS to (%" G_GUINT64_FORMAT ") time: %" - G_GUINT64_FORMAT, base_PCR, time); - - if (demux->clock && demux->clock_base == GST_CLOCK_TIME_NONE) { - demux->clock_base = gst_clock_get_time (demux->clock); - gst_clock_set_calibration (demux->clock, - gst_clock_get_internal_time (demux->clock), demux->clock_base, 1, 1); - } - - gst_pad_push_event (stream->pad, - gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, time, -1, 0)); - - return TRUE; - - /* ERRORS */ -no_pmt: - { - /* check if it's in our partial ts pid list */ - if (mpegts_is_elem_pid (demux, stream->PID)) { - GST_DEBUG_OBJECT (demux, - "Elementary PID, using pts %" G_GUINT64_FORMAT, pts); - time = MPEGTIME_TO_GSTTIME (pts) + stream->base_time; - GST_DEBUG_OBJECT (demux, "segment PTS to (%" G_GUINT64_FORMAT ") time: %" - G_GUINT64_FORMAT, pts, time); - - gst_pad_push_event (stream->pad, - gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, time, -1, 0)); - return TRUE; - } - - } -no_pmt_stream: - { - GST_DEBUG_OBJECT (demux, "no PMT stream found"); - return FALSE; - } -no_pcr_stream: - { - GST_DEBUG_OBJECT (demux, "no PCR stream found"); - return FALSE; - } -} - -#ifndef GST_FLOW_IS_SUCCESS -#define GST_FLOW_IS_SUCCESS(ret) ((ret) >= GST_FLOW_OK) -#endif - -static GstFlowReturn -gst_mpegts_demux_combine_flows (GstMpegTSDemux * demux, - GstMpegTSStream * stream, GstFlowReturn ret) -{ - gint i; - - /* store the value */ - stream->last_ret = ret; - - /* if it's success we can return the value right away */ - if (GST_FLOW_IS_SUCCESS (ret)) - goto done; - - /* any other error that is not-linked can be returned right - * away */ - if (ret != GST_FLOW_NOT_LINKED) - goto done; - - /* only return NOT_LINKED if all other pads returned NOT_LINKED */ - for (i = 0; i < MPEGTS_MAX_PID + 1; i++) { - if (!(stream = demux->streams[i])) - continue; - - /* some other return value (must be SUCCESS but we can return - * other values as well) */ - ret = stream->last_ret; - if (ret != GST_FLOW_NOT_LINKED) - goto done; - } - /* if we get here, all other pads were unlinked and we return - * NOT_LINKED then */ -done: - return ret; -} - - -static GstFlowReturn -gst_mpegts_demux_data_cb (GstPESFilter * filter, gboolean first, - GstBuffer * buffer, GstMpegTSStream * stream) -{ - GstMpegTSDemux *demux; - GstFlowReturn ret; - GstPad *srcpad; - gint64 pts; - GstClockTime time; - - demux = stream->demux; - srcpad = stream->pad; - - GST_LOG_OBJECT (demux, "got data on PID 0x%04x", stream->PID); - - if (first && filter->pts != -1) { - pts = filter->pts; - time = MPEGTIME_TO_GSTTIME (pts) + stream->base_time; - - if ((stream->last_time > 0 && stream->last_time < time && - time - stream->last_time > GST_SECOND * 60 * 10) - || (stream->last_time > time - && stream->last_time - time > GST_SECOND * 60 * 10)) { - /* check first to see if we're in middle of detecting a discont in PCR. - * if we are we're not sure what timestamp the buffer should have, best - * to drop. */ - if (stream->PMT_pid <= MPEGTS_MAX_PID && demux->streams[stream->PMT_pid] - && demux->streams[demux->streams[stream->PMT_pid]->PMT.PCR_PID] - && demux->streams[demux->streams[stream->PMT_pid]->PMT.PCR_PID]-> - discont_PCR) { - GST_WARNING_OBJECT (demux, "middle of discont, dropping"); - goto bad_timestamp; - } - /* check for wraparounds */ - else if (stream->last_time > 0 && time < stream->last_time && - stream->last_time - time > MPEGTIME_TO_GSTTIME (G_MAXUINT32)) { - /* wrap around occurred */ - if (stream->base_time + MPEGTIME_TO_GSTTIME ((guint64) (1) << 33) + - MPEGTIME_TO_GSTTIME (pts) > - stream->last_time + GST_SECOND * 60 * 10) { - GST_DEBUG_OBJECT (demux, - "looks like we have a corrupt packet because its pts is a lot lower than" - " the previous pts but not a wraparound"); - goto bad_timestamp; - } - /* wraparound has occured but before we have detected in the pcr, - * so check we're actually getting pcr's...if we are, don't update - * the base time..just set the time and last_time correctly - */ - if (stream->PMT_pid <= MPEGTS_MAX_PID && demux->streams[stream->PMT_pid] - && demux->streams[demux->streams[stream->PMT_pid]->PMT.PCR_PID] - && demux->streams[demux->streams[stream->PMT_pid]->PMT.PCR_PID]-> - last_PCR > 0) { - GST_DEBUG_OBJECT (demux, "timestamps wrapped before noticed in PCR"); - time = MPEGTIME_TO_GSTTIME (pts) + stream->base_time + - MPEGTIME_TO_GSTTIME ((guint64) (1) << 33); - stream->last_time = time; - } else { - stream->base_time = stream->base_time + - MPEGTIME_TO_GSTTIME ((guint64) (1) << 33); - time = MPEGTIME_TO_GSTTIME (pts) + stream->base_time; - GST_DEBUG_OBJECT (demux, - "timestamps wrapped around, compensating with new base time: %" - GST_TIME_FORMAT "last time: %" GST_TIME_FORMAT " time: %" - GST_TIME_FORMAT, GST_TIME_ARGS (stream->base_time), - GST_TIME_ARGS (stream->last_time), GST_TIME_ARGS (time)); - stream->last_time = time; - } - } else if (stream->last_time > 0 && time > stream->last_time && - time - stream->last_time > MPEGTIME_TO_GSTTIME (G_MAXUINT32) && - stream->base_time > 0) { - /* had a previous wrap around */ - if (time - MPEGTIME_TO_GSTTIME ((guint64) (1) << 33) + - GST_SECOND * 60 * 10 < stream->last_time) { - GST_DEBUG_OBJECT (demux, - "looks like we have a corrupt packet because its pts is a lot higher than" - " the previous pts but not because of a wraparound or pcr discont"); - goto bad_timestamp; - } - if (ABS ((time - MPEGTIME_TO_GSTTIME ((guint64) (1) << 33)) - - stream->last_time) < GST_SECOND) { - GST_DEBUG_OBJECT (demux, - "timestamps wrapped around earlier but we have an out of pts: %" - G_GUINT64_FORMAT ", as %" GST_TIME_FORMAT " translated to: %" - GST_TIME_FORMAT " and last_time of %" GST_TIME_FORMAT, pts, - GST_TIME_ARGS (time), - GST_TIME_ARGS (time - MPEGTIME_TO_GSTTIME ((guint64) (1) << 33)), - GST_TIME_ARGS (stream->last_time)); - time = time - MPEGTIME_TO_GSTTIME ((guint64) (1) << 33); - } else { - GST_DEBUG_OBJECT (demux, - "timestamp may have wrapped around recently but not sure and pts" - " is very different, dropping it timestamp of this packet: %" - GST_TIME_FORMAT " compared to last timestamp: %" GST_TIME_FORMAT, - GST_TIME_ARGS (time - - MPEGTIME_TO_GSTTIME ((guint64) (1) << (33))), - GST_TIME_ARGS (stream->last_time)); - goto bad_timestamp; - } - - } else { - /* we must have a corrupt packet */ - GST_WARNING_OBJECT (demux, "looks like we have a corrupt packet because" - " its timestamp is buggered timestamp: %" GST_TIME_FORMAT - " compared to" " last timestamp: %" GST_TIME_FORMAT, - GST_TIME_ARGS (time), GST_TIME_ARGS (stream->last_time)); - goto bad_timestamp; - } - } else { /* do not set last_time if a packet with pts from before wrap - around arrived after the wrap around occured */ - stream->last_time = time; - } - } else { - time = GST_CLOCK_TIME_NONE; - pts = -1; - } - - GST_LOG_OBJECT (demux, "setting PTS to (%" G_GUINT64_FORMAT ") time: %" - GST_TIME_FORMAT " on buffer %p first buffer: %d base_time: %" - GST_TIME_FORMAT, pts, GST_TIME_ARGS (time), buffer, first, - GST_TIME_ARGS (stream->base_time)); - - GST_BUFFER_TIMESTAMP (buffer) = time; - - /* check if we have a pad already */ - if (srcpad == NULL) { - /* fill in the last bits of the stream */ - /* if no stream type, then assume it based on the PES start code, - * needed for partial ts streams without PMT */ - if (G_UNLIKELY (stream->flags & MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN)) { - if ((filter->start_code & 0xFFFFFFF0) == PACKET_VIDEO_START_CODE) { - /* it is mpeg2 video */ - stream->stream_type = ST_VIDEO_MPEG2; - stream->flags &= ~MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN; - stream->flags |= MPEGTS_STREAM_FLAG_IS_VIDEO; - GST_DEBUG_OBJECT (demux, "Found stream 0x%04x without PMT with video " - "start_code. Treating as video", stream->PID); - } else if ((filter->start_code & 0xFFFFFFE0) == PACKET_AUDIO_START_CODE) { - /* it is mpeg audio */ - stream->stream_type = ST_AUDIO_MPEG2; - stream->flags &= ~MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN; - GST_DEBUG_OBJECT (demux, "Found stream 0x%04x without PMT with audio " - "start_code. Treating as audio", stream->PID); - } else { - GST_LOG_OBJECT (demux, "Stream start code on pid 0x%04x is: 0x%x", - stream->PID, filter->start_code); - } - } - if (!gst_mpegts_demux_fill_stream (stream, filter->id, stream->stream_type)) - goto unknown_type; - - GST_DEBUG_OBJECT (demux, - "New stream 0x%04x of type %d with caps %" GST_PTR_FORMAT, stream->PID, - stream->stream_type, GST_PAD_CAPS (stream->pad)); - - srcpad = stream->pad; - - /* activate and add */ - gst_pad_set_active (srcpad, TRUE); - gst_element_add_pad (GST_ELEMENT_CAST (demux), srcpad); - demux->need_no_more_pads = TRUE; - - /* send new_segment */ - gst_mpegts_demux_send_new_segment (demux, stream, pts); - } - - GST_DEBUG_OBJECT (demux, "pushing buffer"); - gst_buffer_set_caps (buffer, GST_PAD_CAPS (srcpad)); - ret = gst_pad_push (srcpad, buffer); - ret = gst_mpegts_demux_combine_flows (demux, stream, ret); - - return ret; - - /* ERROR */ -unknown_type: - { - GST_DEBUG_OBJECT (demux, "got unknown stream id 0x%02x, type 0x%02x", - filter->id, filter->type); - gst_buffer_unref (buffer); - return gst_mpegts_demux_combine_flows (demux, stream, GST_FLOW_NOT_LINKED); - } -bad_timestamp: - { - gst_buffer_unref (buffer); - return gst_mpegts_demux_combine_flows (demux, stream, GST_FLOW_OK); - } - -} - -static void -gst_mpegts_demux_resync_cb (GstPESFilter * filter, GstMpegTSStream * stream) -{ - /* does nothing for now */ -} - -static gboolean -gst_mpegts_demux_is_reserved_PID (GstMpegTSDemux * demux, guint16 PID) -{ - return (PID >= PID_RESERVED_FIRST) && (PID < PID_RESERVED_LAST); -} - -/* This function assumes that provided PID never will be greater than - * MPEGTS_MAX_PID (13 bits), this is currently guaranteed as everywhere in - * the code recovered PID at maximum is 13 bits long. - */ -static FORCE_INLINE GstMpegTSStream * -gst_mpegts_demux_get_stream_for_PID (GstMpegTSDemux * demux, guint16 PID) -{ - GstMpegTSStream *stream = NULL; - - stream = demux->streams[PID]; - - if (G_UNLIKELY (stream == NULL)) { - stream = g_new0 (GstMpegTSStream, 1); - - stream->demux = demux; - stream->PID = PID; - stream->pad = NULL; - stream->base_PCR = -1; - stream->last_PCR = -1; - stream->last_PCR_difference = -1; - stream->PMT.version_number = -1; - stream->PAT.version_number = -1; - stream->PMT_pid = MPEGTS_MAX_PID + 1; - stream->flags |= MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN; - stream->pes_buffer_in_sync = FALSE; - switch (PID) { - /* check for fixed mapping */ - case PID_PROGRAM_ASSOCIATION_TABLE: - stream->PID_type = PID_TYPE_PROGRAM_ASSOCIATION; - /* initialise section filter */ - gst_section_filter_init (&stream->section_filter); - break; - case PID_CONDITIONAL_ACCESS_TABLE: - stream->PID_type = PID_TYPE_CONDITIONAL_ACCESS; - /* initialise section filter */ - gst_section_filter_init (&stream->section_filter); - break; - case PID_NULL_PACKET: - stream->PID_type = PID_TYPE_NULL_PACKET; - break; - default: - /* mark reserved PIDs */ - if (gst_mpegts_demux_is_reserved_PID (demux, PID)) { - stream->PID_type = PID_TYPE_RESERVED; - } else { - /* check if PMT found in PAT */ - if (gst_mpegts_demux_is_PMT (demux, PID)) { - stream->PID_type = PID_TYPE_PROGRAM_MAP; - /* initialise section filter */ - gst_section_filter_init (&stream->section_filter); - } else - stream->PID_type = PID_TYPE_UNKNOWN; - } - break; - } - GST_DEBUG_OBJECT (demux, "creating stream %p for PID 0x%04x, PID_type %d", - stream, PID, stream->PID_type); - - demux->streams[PID] = stream; - } - - return stream; -} - -/* - * CA_section() { - * table_id 8 uimsbf == 0x01 - * section_syntax_indicator 1 bslbf == 1 - * '0' 1 bslbf == 0 - * reserved 2 bslbf - * section_length 12 uimsbf == 00xxxxx... - * reserved 18 bslbf - * version_number 5 uimsbf - * current_next_indicator 1 bslbf - * section_number 8 uimsbf - * last_section_number 8 uimsbf - * for (i=0; i<N;i++) { - * descriptor() - * } - * CRC_32 32 rpchof - * } - */ -static FORCE_INLINE gboolean -gst_mpegts_stream_parse_cat (GstMpegTSStream * stream, - guint8 * data, guint datalen) -{ - GstMpegTSDemux *demux; - - demux = stream->demux; - - GST_DEBUG_OBJECT (demux, "parsing CA section"); - return TRUE; -} - -static void -gst_mpegts_activate_pmt (GstMpegTSDemux * demux, GstMpegTSStream * stream) -{ - GST_DEBUG_OBJECT (demux, "activating PMT 0x%08x", stream->PID); - - /* gst_mpegts_demux_remove_pads (demux); */ - - demux->current_PMT = stream->PID; - - /* PMT has been updated, signal the change */ - if (demux->current_PMT == stream->PID) - g_object_notify ((GObject *) (demux), "pmt-info"); -} - -/* - * TS_program_map_section() { - * table_id 8 uimsbf == 0x02 - * section_syntax_indicator 1 bslbf == 1 - * '0' 1 bslbf == 0 - * reserved 2 bslbf - * section_length 12 uimsbf == 00xxxxx... - * program_number 16 uimsbf - * reserved 2 bslbf - * version_number 5 uimsbf - * current_next_indicator 1 bslbf - * section_number 8 uimsbf - * last_section_number 8 uimsbf - * reserved 3 bslbf - * PCR_PID 13 uimsbf - * reserved 4 bslbf - * program_info_length 12 uimsbf == 00xxxxx... - * for (i=0; i<N; i++) { - * descriptor() - * } - * for (i=0;i<N1;i++) { - * stream_type 8 uimsbf - * reserved 3 bslbf - * elementary_PID 13 uimsnf - * reserved 4 bslbf - * ES_info_length 12 uimsbf == 00xxxxx... - * for (i=0; i<N2; i++) { - * descriptor() - * } - * } - * CRC_32 32 rpchof - * } - */ -static FORCE_INLINE gboolean -gst_mpegts_stream_parse_pmt (GstMpegTSStream * stream, - guint8 * data, guint datalen) -{ - GstMpegTSDemux *demux; - gint entries; - guint32 CRC; - GstMpegTSPMT *PMT; - guint version_number; - guint8 current_next_indicator; - guint16 program_number; - - demux = stream->demux; - - if (*data++ != 0x02) - goto wrong_id; - if ((data[0] & 0xc0) != 0x80) - goto wrong_sync; - if ((data[0] & 0x0c) != 0x00) - goto wrong_seclen; - - data += 2; - - if (demux->check_crc) - if (gst_mpegts_demux_calc_crc32 (data - 3, datalen) != 0) - goto wrong_crc; - - GST_DEBUG_OBJECT (demux, "PMT section_length: %d", datalen - 3); - - PMT = &stream->PMT; - - /* check if version number changed */ - version_number = (data[2] & 0x3e) >> 1; - GST_DEBUG_OBJECT (demux, "PMT version_number: %d", version_number); - - current_next_indicator = (data[2] & 0x01); - GST_DEBUG_OBJECT (demux, "PMT current_next_indicator %d", - current_next_indicator); - if (current_next_indicator == 0) - goto not_yet_applicable; - program_number = GST_READ_UINT16_BE (data); - - if (demux->program_number != -1 && demux->program_number != program_number) { - goto wrong_program_number; - } - if (demux->program_number == -1) { - GST_INFO_OBJECT (demux, "No program number set, so using first parsed PMT" - "'s program number: %d", program_number); - demux->program_number = program_number; - } - - if (version_number == PMT->version_number) - goto same_version; - - PMT->version_number = version_number; - PMT->current_next_indicator = current_next_indicator; - - stream->PMT.program_number = program_number; - data += 3; - GST_DEBUG_OBJECT (demux, "PMT program_number: %d", PMT->program_number); - - PMT->section_number = *data++; - GST_DEBUG_OBJECT (demux, "PMT section_number: %d", PMT->section_number); - - PMT->last_section_number = *data++; - GST_DEBUG_OBJECT (demux, "PMT last_section_number: %d", - PMT->last_section_number); - - PMT->PCR_PID = GST_READ_UINT16_BE (data); - PMT->PCR_PID &= 0x1fff; - data += 2; - GST_DEBUG_OBJECT (demux, "PMT PCR_PID: 0x%04x", PMT->PCR_PID); - /* create or get stream, not much we can say about it except that when we get - * a data stream and we need a PCR, we can use the stream to get/store the - * base_PCR. */ - gst_mpegts_demux_get_stream_for_PID (demux, PMT->PCR_PID); - - if ((data[0] & 0x0c) != 0x00) - goto wrong_pilen; - - PMT->program_info_length = GST_READ_UINT16_BE (data); - PMT->program_info_length &= 0x0fff; - /* FIXME: validate value of program_info_length */ - data += 2; - - /* FIXME: validate value of program_info_length, before using */ - - /* parse descriptor */ - if (G_UNLIKELY (PMT->program_info)) - gst_mpeg_descriptor_free (PMT->program_info); - PMT->program_info = - gst_mpeg_descriptor_parse (data, PMT->program_info_length); - - /* skip descriptor */ - data += PMT->program_info_length; - GST_DEBUG_OBJECT (demux, "PMT program_info_length: %d", - PMT->program_info_length); - - entries = datalen - 3 - PMT->program_info_length - 9 - 4; - - if (G_UNLIKELY (PMT->entries)) - g_array_free (PMT->entries, TRUE); - PMT->entries = g_array_new (FALSE, TRUE, sizeof (GstMpegTSPMTEntry)); - - while (entries > 0) { - GstMpegTSPMTEntry entry; - GstMpegTSStream *ES_stream; - guint8 stream_type; - guint16 ES_info_length; - - stream_type = *data++; - - entry.PID = GST_READ_UINT16_BE (data); - entry.PID &= 0x1fff; - data += 2; - - if ((data[0] & 0x0c) != 0x00) - goto wrong_esilen; - - ES_info_length = GST_READ_UINT16_BE (data); - ES_info_length &= 0x0fff; - data += 2; - - /* get/create elementary stream */ - ES_stream = gst_mpegts_demux_get_stream_for_PID (demux, entry.PID); - /* check if PID unknown */ - if (ES_stream->PID_type == PID_TYPE_UNKNOWN) { - /* set as elementary */ - ES_stream->PID_type = PID_TYPE_ELEMENTARY; - /* set stream type */ - ES_stream->stream_type = stream_type; - ES_stream->flags &= ~MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN; - - /* init base and last time */ - ES_stream->base_time = 0; - ES_stream->last_time = 0; - - /* parse descriptor */ - ES_stream->ES_info = gst_mpeg_descriptor_parse (data, ES_info_length); - - if (stream_type == ST_PRIVATE_SECTIONS) { - /* not really an ES, so use section filter not pes filter */ - /* initialise section filter */ - GstCaps *caps; - gst_section_filter_init (&ES_stream->section_filter); - ES_stream->PID_type = PID_TYPE_PRIVATE_SECTION; - ES_stream->pad = gst_pad_new_from_static_template (&private_template, - g_strdup_printf ("private_%04x", entry.PID)); - gst_pad_set_active (ES_stream->pad, TRUE); - caps = gst_caps_new_simple ("application/x-mpegts-private-section", - NULL); - gst_pad_use_fixed_caps (ES_stream->pad); - gst_pad_set_caps (ES_stream->pad, caps); - gst_caps_unref (caps); - - gst_element_add_pad (GST_ELEMENT_CAST (demux), ES_stream->pad); - } else { - /* Recognise video streams based on stream_type */ - if (gst_mpegts_stream_is_video (ES_stream)) - ES_stream->flags |= MPEGTS_STREAM_FLAG_IS_VIDEO; - - /* set adaptor */ - gst_pes_filter_init (&ES_stream->filter, NULL, NULL); - gst_pes_filter_set_callbacks (&ES_stream->filter, - (GstPESFilterData) gst_mpegts_demux_data_cb, - (GstPESFilterResync) gst_mpegts_demux_resync_cb, ES_stream); - if (ES_stream->flags & MPEGTS_STREAM_FLAG_IS_VIDEO) - ES_stream->filter.allow_unbounded = TRUE; - ES_stream->PMT_pid = stream->PID; - } - } - /* skip descriptor */ - data += ES_info_length; - GST_DEBUG_OBJECT (demux, - " PMT stream_type: %02x, PID: 0x%04x (ES_info_len %d)", stream_type, - entry.PID, ES_info_length); - - g_array_append_val (PMT->entries, entry); - - entries -= 5 + ES_info_length; - } - CRC = GST_READ_UINT32_BE (data); - GST_DEBUG_OBJECT (demux, "PMT CRC: 0x%08x", CRC); - - if (demux->program_number == -1) { - /* No program specified, take the first PMT */ - if (demux->current_PMT == 0 || demux->current_PMT == stream->PID) - gst_mpegts_activate_pmt (demux, stream); - } else { - /* Program specified, activate this if it matches */ - if (demux->program_number == PMT->program_number) - gst_mpegts_activate_pmt (demux, stream); - } - - return TRUE; - - /* ERRORS */ -wrong_crc: - { - GST_DEBUG_OBJECT (demux, "wrong crc"); - return FALSE; - } -same_version: - { - GST_DEBUG_OBJECT (demux, "same version as existing PMT"); - return TRUE; - } -wrong_program_number: - { - GST_DEBUG_OBJECT (demux, "PMT is for program number we don't care about"); - return TRUE; - } - -not_yet_applicable: - { - GST_DEBUG_OBJECT (demux, "Ignoring PMT with current_next_indicator = 0"); - return TRUE; - } -wrong_id: - { - GST_DEBUG_OBJECT (demux, "expected table_id == 0, got 0x%02x", data[0]); - return FALSE; - } -wrong_sync: - { - GST_DEBUG_OBJECT (demux, "expected sync 10, got %02x", data[0]); - return FALSE; - } -wrong_seclen: - { - GST_DEBUG_OBJECT (demux, - "first two bits of section length must be 0, got %02x", data[0]); - return FALSE; - } -wrong_pilen: - { - GST_DEBUG_OBJECT (demux, - "first two bits of program_info length must be 0, got %02x", data[0]); - return FALSE; - } -wrong_esilen: - { - GST_DEBUG_OBJECT (demux, - "first two bits of ES_info length must be 0, got %02x", data[0]); - g_array_free (stream->PMT.entries, TRUE); - stream->PMT.entries = NULL; - gst_mpeg_descriptor_free (stream->PMT.program_info); - stream->PMT.program_info = NULL; - return FALSE; - } -} - -/* - * private_section() { - * table_id 8 uimsbf - * section_syntax_indicator 1 bslbf - * private_indicator 1 bslbf - * reserved 2 bslbf - * private_section_length 12 uimsbf - * if (section_syntax_indicator == '0') { - * for ( i=0;i<N;i++) { - * private_data_byte 8 bslbf - * } - * } - * else { - * table_id_extension 16 uimsbf - * reserved 2 bslbf - * version_number 5 uimsbf - * current_next_indicator 1 bslbf - * section_number 8 uimsbf - * last_section_number 8 uimsbf - * for ( i=0;i<private_section_length-9;i++) { - * private_data_byte 8 bslbf - * } - * CRC_32 32 rpchof - * } - * } - */ -static FORCE_INLINE gboolean -gst_mpegts_stream_parse_private_section (GstMpegTSStream * stream, - guint8 * data, guint datalen) -{ - GstMpegTSDemux *demux; - GstBuffer *buffer; - demux = stream->demux; - - if (demux->check_crc) - if (gst_mpegts_demux_calc_crc32 (data, datalen) != 0) - goto wrong_crc; - - /* just dump this down the pad */ - if (gst_pad_alloc_buffer (stream->pad, 0, datalen, NULL, &buffer) == - GST_FLOW_OK) { -#ifdef USE_LIBOIL - oil_memcpy (buffer->data, data, datalen); -#else - memcpy (buffer->data, data, datalen); -#endif - gst_pad_push (stream->pad, buffer); - } - - GST_DEBUG_OBJECT (demux, "parsing private section"); - return TRUE; - -wrong_crc: - { - GST_DEBUG_OBJECT (demux, "wrong crc"); - return FALSE; - } -} - -/* - * adaptation_field() { - * adaptation_field_length 8 uimsbf - * if(adaptation_field_length >0) { - * discontinuity_indicator 1 bslbf - * random_access_indicator 1 bslbf - * elementary_stream_priority_indicator 1 bslbf - * PCR_flag 1 bslbf - * OPCR_flag 1 bslbf - * splicing_point_flag 1 bslbf - * transport_private_data_flag 1 bslbf - * adaptation_field_extension_flag 1 bslbf - * if(PCR_flag == '1') { - * program_clock_reference_base 33 uimsbf - * reserved 6 bslbf - * program_clock_reference_extension 9 uimsbf - * } - * if(OPCR_flag == '1') { - * original_program_clock_reference_base 33 uimsbf - * reserved 6 bslbf - * original_program_clock_reference_extension 9 uimsbf - * } - * if (splicing_point_flag == '1') { - * splice_countdown 8 tcimsbf - * } - * if(transport_private_data_flag == '1') { - * transport_private_data_length 8 uimsbf - * for (i=0; i<transport_private_data_length;i++){ - * private_data_byte 8 bslbf - * } - * } - * if (adaptation_field_extension_flag == '1' ) { - * adaptation_field_extension_length 8 uimsbf - * ltw_flag 1 bslbf - * piecewise_rate_flag 1 bslbf - * seamless_splice_flag 1 bslbf - * reserved 5 bslbf - * if (ltw_flag == '1') { - * ltw_valid_flag 1 bslbf - * ltw_offset 15 uimsbf - * } - * if (piecewise_rate_flag == '1') { - * reserved 2 bslbf - * piecewise_rate 22 uimsbf - * } - * if (seamless_splice_flag == '1'){ - * splice_type 4 bslbf - * DTS_next_AU[32..30] 3 bslbf - * marker_bit 1 bslbf - * DTS_next_AU[29..15] 15 bslbf - * marker_bit 1 bslbf - * DTS_next_AU[14..0] 15 bslbf - * marker_bit 1 bslbf - * } - * for ( i=0;i<N;i++) { - * reserved 8 bslbf - * } - * } - * for (i=0;i<N;i++){ - * stuffing_byte 8 bslbf - * } - * } - * } - */ -static FORCE_INLINE gboolean -gst_mpegts_demux_parse_adaptation_field (GstMpegTSStream * stream, - const guint8 * data, guint data_len, guint * consumed) -{ - GstMpegTSDemux *demux; - guint8 length; - guint8 *data_end; - gint i; - GstMpegTSStream *pmt_stream; - - demux = stream->demux; - - data_end = ((guint8 *) data) + data_len; - - length = *data++; - if (G_UNLIKELY (length > data_len)) - goto wrong_length; - - GST_DEBUG_OBJECT (demux, "parsing adaptation field, length %d", length); - - if (length > 0) { - guint8 flags = *data++; - - GST_DEBUG_OBJECT (demux, "flags 0x%02x", flags); - /* discontinuity flag */ - if (flags & 0x80) { - GST_DEBUG_OBJECT (demux, "discontinuity flag set"); - } - /* PCR_flag */ - if (flags & 0x10) { - guint32 pcr1; - guint16 pcr2; - guint64 pcr, pcr_ext; - gboolean valid_pcr = TRUE; - - pcr1 = GST_READ_UINT32_BE (data); - pcr2 = GST_READ_UINT16_BE (data + 4); - pcr = ((guint64) pcr1) << 1; - pcr |= (pcr2 & 0x8000) >> 15; - pcr_ext = (pcr2 & 0x01ff); - if (pcr_ext) - pcr = (pcr * 300 + pcr_ext % 300) / 300; - GST_DEBUG_OBJECT (demux, "have PCR %" G_GUINT64_FORMAT " on PID 0x%04x " - "and last pcr is %" G_GUINT64_FORMAT, - pcr, stream->PID, stream->last_PCR); - /* pcr has been converted into units of 90Khz ticks - * so assume discont if last pcr was > 900000 (10 second) lower */ - if (stream->last_PCR != -1 && - (pcr - stream->last_PCR > 900000 || pcr < stream->last_PCR)) { - GstClockTimeDiff base_time_difference; - - GST_DEBUG_OBJECT (demux, - "looks like we have a discont, this pcr should really be approx: %" - G_GUINT64_FORMAT, stream->last_PCR + stream->last_PCR_difference); - if (stream->discont_PCR == FALSE) { - if (pcr > stream->last_PCR) { - base_time_difference = -MPEGTIME_TO_GSTTIME ((pcr - - (stream->last_PCR + stream->last_PCR_difference))); - } else { - base_time_difference = MPEGTIME_TO_GSTTIME ((stream->last_PCR + - stream->last_PCR_difference) - pcr); - } - stream->discont_PCR = TRUE; - stream->discont_difference = base_time_difference; - valid_pcr = FALSE; - } else { - GstClockTimeDiff base_time_difference; - - /* need to update all pmt streams in case this pcr is pcr - * for multiple programs */ - int j; - gboolean *pmts_checked = (gboolean *) & demux->pmts_checked; - memset (pmts_checked, 0, sizeof (gboolean) * (MPEGTS_MAX_PID + 1)); - - for (j = 0; j < MPEGTS_MAX_PID + 1; j++) { - if (demux->streams[j] && demux->streams[j]->PMT_pid) { - if (!pmts_checked[demux->streams[j]->PMT_pid]) { - /* check if this is correct pcr for pmt */ - if (demux->streams[demux->streams[j]->PMT_pid] && - stream->PID == - demux->streams[demux->streams[j]->PMT_pid]->PMT.PCR_PID) { - /* checking the pcr discont is similar this second time - * if similar, update the es pids - * if not, assume it's a false discont due to corruption - * or other */ - if (pcr > stream->last_PCR) { - base_time_difference = -MPEGTIME_TO_GSTTIME ((pcr - - (stream->last_PCR + stream->last_PCR_difference))); - } else { - base_time_difference = - MPEGTIME_TO_GSTTIME ((stream->last_PCR + - stream->last_PCR_difference) - pcr); - } - if ((base_time_difference - stream->discont_difference > 0 && - base_time_difference - stream->discont_difference < - GST_SECOND * 10) || - (stream->discont_difference - base_time_difference > 0 && - stream->discont_difference - base_time_difference < - GST_SECOND * 10)) { - pmt_stream = demux->streams[demux->streams[j]->PMT_pid]; - GST_DEBUG_OBJECT (demux, "Updating base_time on all es " - "pids belonging to PMT 0x%02x", stream->PMT_pid); - for (i = 0; i <= pmt_stream->PMT.entries->len; i++) { - GstMpegTSPMTEntry *cur_entry = - &g_array_index (pmt_stream->PMT.entries, - GstMpegTSPMTEntry, i); - GST_DEBUG_OBJECT (demux, - "Updating base time on " "pid 0x%02x by %" - G_GINT64_FORMAT, cur_entry->PID, - stream->discont_difference); - if (cur_entry->PID <= MPEGTS_MAX_PID - && demux->streams[cur_entry->PID]) { - demux->streams[cur_entry->PID]->base_time += - stream->discont_difference; - } - } - } else { - GST_DEBUG_OBJECT (demux, "last PCR discont looked to be " - "bogus: previous discont difference %" G_GINT64_FORMAT - " now %" G_GINT64_FORMAT, stream->discont_difference, - base_time_difference); - valid_pcr = FALSE; - } - } - } - pmts_checked[demux->streams[j]->PMT_pid] = TRUE; - } - } - - stream->discont_PCR = FALSE; - stream->discont_difference = 0; - } - } else if (stream->last_PCR != -1) { - if (stream->discont_PCR) { - GST_DEBUG_OBJECT (demux, "last PCR discont looked to be bogus"); - stream->discont_PCR = FALSE; - stream->discont_difference = 0; - } - stream->last_PCR_difference = pcr - stream->last_PCR; - } - GST_DEBUG_OBJECT (demux, - "valid pcr: %d last PCR difference: %" G_GUINT64_FORMAT, valid_pcr, - stream->last_PCR_difference); - if (valid_pcr) { - - stream->last_PCR = pcr; - - if (demux->clock && demux->clock_base != GST_CLOCK_TIME_NONE) { - gdouble r_squared; - GstMpegTSStream *PMT_stream; - - /* for the reference start time we need to consult the PCR_PID of the - * current PMT */ - PMT_stream = demux->streams[demux->current_PMT]; - if (PMT_stream->PMT.PCR_PID == stream->PID) { - GST_LOG_OBJECT (demux, - "internal %" GST_TIME_FORMAT " observation %" GST_TIME_FORMAT - " pcr: %" G_GUINT64_FORMAT " base_pcr: %" G_GUINT64_FORMAT - "pid: %d", - GST_TIME_ARGS (gst_clock_get_internal_time (demux->clock)), - GST_TIME_ARGS (MPEGTIME_TO_GSTTIME (pcr) - - MPEGTIME_TO_GSTTIME (stream->base_PCR) + stream->base_time + - demux->clock_base), pcr, stream->base_PCR, stream->PID); - gst_clock_add_observation (demux->clock, - gst_clock_get_internal_time (demux->clock), - demux->clock_base + stream->base_time + - MPEGTIME_TO_GSTTIME (pcr) - - MPEGTIME_TO_GSTTIME (stream->base_PCR), &r_squared); - } - } - } - data += 6; - } - /* OPCR_flag */ - if (flags & 0x08) { - guint32 opcr1; - guint16 opcr2; - guint64 opcr, opcr_ext; - - opcr1 = GST_READ_UINT32_BE (data); - opcr2 = GST_READ_UINT16_BE (data + 4); - opcr = ((guint64) opcr1) << 1; - opcr |= (opcr2 & 0x8000) >> 15; - opcr_ext = (opcr2 & 0x01ff); - if (opcr_ext) - opcr = (opcr * 300 + opcr_ext % 300) / 300; - GST_DEBUG_OBJECT (demux, "have OPCR %" G_GUINT64_FORMAT " on PID 0x%04x", - opcr, stream->PID); - stream->last_OPCR = opcr; - data += 6; - } - /* splicing_point_flag */ - if (flags & 0x04) { - guint8 splice_countdown; - - splice_countdown = *data++; - GST_DEBUG_OBJECT (demux, "have splicing point, countdown %d", - splice_countdown); - } - /* transport_private_data_flag */ - if (flags & 0x02) { - guint8 plength = *data++; - - if (data + plength > data_end) - goto private_data_too_large; - - GST_DEBUG_OBJECT (demux, "have private data, length: %d", plength); - data += plength; - } - /* adaptation_field_extension_flag */ - if (flags & 0x01) { - GST_DEBUG_OBJECT (demux, "have field extension"); - } - } - - *consumed = length + 1; - return TRUE; - - /* ERRORS */ -wrong_length: - { - GST_DEBUG_OBJECT (demux, "length %d > %d", length, data_len); - return FALSE; - } -private_data_too_large: - { - GST_DEBUG_OBJECT (demux, "have too large a private data length"); - return FALSE; - } -} - -/* - * program_association_section() { - * table_id 8 uimsbf == 0x00 - * section_syntax_indicator 1 bslbf == 1 - * '0' 1 bslbf == 0 - * reserved 2 bslbf - * section_length 12 uimsbf == 00xxxxx... - * transport_stream_id 16 uimsbf - * reserved 2 bslbf - * version_number 5 uimsbf - * current_next_indicator 1 bslbf - * section_number 8 uimsbf - * last_section_number 8 uimsbf - * for (i=0; i<N;i++) { - * program_number 16 uimsbf - * reserved 3 bslbf - * if(program_number == '0') { - * network_PID 13 uimsbf - * } - * else { - * program_map_PID 13 uimsbf - * } - * } - * CRC_32 32 rpchof - * } - */ -static FORCE_INLINE gboolean -gst_mpegts_stream_parse_pat (GstMpegTSStream * stream, - guint8 * data, guint datalen) -{ - GstMpegTSDemux *demux; - gint entries; - guint32 CRC; - guint version_number; - guint8 current_next_indicator; - GstMpegTSPAT *PAT; - - demux = stream->demux; - - if (datalen < 8) - return FALSE; - - if (*data++ != 0x00) - goto wrong_id; - if ((data[0] & 0xc0) != 0x80) - goto wrong_sync; - if ((data[0] & 0x0c) != 0x00) - goto wrong_seclen; - - data += 2; - GST_DEBUG_OBJECT (demux, "PAT section_length: %d", datalen - 3); - - if (demux->check_crc) - if (gst_mpegts_demux_calc_crc32 (data - 3, datalen) != 0) - goto wrong_crc; - - PAT = &stream->PAT; - - version_number = (data[2] & 0x3e) >> 1; - GST_DEBUG_OBJECT (demux, "PAT version_number: %d", version_number); - if (version_number == PAT->version_number) - goto same_version; - - current_next_indicator = (data[2] & 0x01); - GST_DEBUG_OBJECT (demux, "PAT current_next_indicator %d", - current_next_indicator); - if (current_next_indicator == 0) - goto not_yet_applicable; - - PAT->version_number = version_number; - PAT->current_next_indicator = current_next_indicator; - - PAT->transport_stream_id = GST_READ_UINT16_BE (data); - data += 3; - GST_DEBUG_OBJECT (demux, "PAT stream_id: %d", PAT->transport_stream_id); - - PAT->section_number = *data++; - PAT->last_section_number = *data++; - - GST_DEBUG_OBJECT (demux, "PAT current_next_indicator: %d", - PAT->current_next_indicator); - GST_DEBUG_OBJECT (demux, "PAT section_number: %d", PAT->section_number); - GST_DEBUG_OBJECT (demux, "PAT last_section_number: %d", - PAT->last_section_number); - - /* 5 bytes after section length and a 4 bytes CRC, - * the rest is 4 byte entries */ - entries = (datalen - 3 - 9) / 4; - - if (PAT->entries) - g_array_free (PAT->entries, TRUE); - PAT->entries = - g_array_sized_new (FALSE, TRUE, sizeof (GstMpegTSPATEntry), entries); - - while (entries--) { - GstMpegTSPATEntry entry; - GstMpegTSStream *PMT_stream; - - entry.program_number = GST_READ_UINT16_BE (data); - data += 2; - entry.PID = GST_READ_UINT16_BE (data); - entry.PID &= 0x1fff; - data += 2; - - /* get/create stream for PMT */ - PMT_stream = gst_mpegts_demux_get_stream_for_PID (demux, entry.PID); - if (PMT_stream->PID_type != PID_TYPE_PROGRAM_MAP) { - /* set as program map */ - PMT_stream->PID_type = PID_TYPE_PROGRAM_MAP; - /* initialise section filter */ - gst_section_filter_init (&PMT_stream->section_filter); - } - - g_array_append_val (PAT->entries, entry); - - GST_DEBUG_OBJECT (demux, " PAT program: %d, PID 0x%04x", - entry.program_number, entry.PID); - } - CRC = GST_READ_UINT32_BE (data); - GST_DEBUG_OBJECT (demux, "PAT CRC: 0x%08x", CRC); - - /* PAT has been updated, signal the change */ - g_object_notify ((GObject *) (demux), "pat-info"); - - return TRUE; - - /* ERRORS */ -wrong_crc: - { - GST_DEBUG_OBJECT (demux, "wrong crc"); - return FALSE; - } -same_version: - { - GST_DEBUG_OBJECT (demux, "same version as existing PAT"); - return TRUE; - } -not_yet_applicable: - { - GST_DEBUG_OBJECT (demux, "Ignoring PAT with current_next_indicator = 0"); - return TRUE; - } -wrong_id: - { - GST_DEBUG_OBJECT (demux, "expected table_id == 0, got %02x", data[0]); - return FALSE; - } -wrong_sync: - { - GST_DEBUG_OBJECT (demux, "expected sync 10, got %02x", data[0]); - return FALSE; - } -wrong_seclen: - { - GST_DEBUG_OBJECT (demux, - "first two bits of section length must be 0, got %02x", data[0]); - return FALSE; - } -} - -static gboolean -gst_mpegts_demux_is_PMT (GstMpegTSDemux * demux, guint16 PID) -{ - GstMpegTSStream *stream; - GstMpegTSPAT *PAT; - gint i; - - /* get the PAT */ - stream = demux->streams[PID_PROGRAM_ASSOCIATION_TABLE]; - if (stream == NULL || stream->PAT.entries == NULL) - return FALSE; - - PAT = &stream->PAT; - - for (i = 0; i < PAT->entries->len; i++) { - GstMpegTSPATEntry *entry; - - entry = &g_array_index (PAT->entries, GstMpegTSPATEntry, i); - if (!entry) - continue; - - if (entry->PID == PID) - return TRUE; - } - return FALSE; -} - -static FORCE_INLINE GstFlowReturn -gst_mpegts_stream_pes_buffer_flush (GstMpegTSStream * stream) -{ - GstFlowReturn ret = GST_FLOW_OK; - - if (stream->pes_buffer) { - GST_BUFFER_SIZE (stream->pes_buffer) = stream->pes_buffer_used; - ret = gst_pes_filter_push (&stream->filter, stream->pes_buffer); - if (ret == GST_FLOW_LOST_SYNC) - stream->pes_buffer_in_sync = FALSE; - stream->pes_buffer = NULL; - } - return ret; -} - -static FORCE_INLINE GstFlowReturn -gst_mpegts_stream_pes_buffer_push (GstMpegTSStream * stream, - const guint8 * in_data, guint in_size) -{ - GstFlowReturn ret = GST_FLOW_OK; - guint8 *out_data; - - if (G_UNLIKELY (stream->pes_buffer - && stream->pes_buffer_used + in_size > stream->pes_buffer_size)) { - GST_DEBUG ("stream with PID 0x%04x have PES buffer full at %u bytes." - " Flushing and growing the buffer", - stream->PID, stream->pes_buffer_size); - stream->pes_buffer_overflow = TRUE; - if (stream->pes_buffer_size < (MPEGTS_MAX_PES_BUFFER_SIZE >> 1)) - stream->pes_buffer_size <<= 1; - - ret = gst_mpegts_stream_pes_buffer_flush (stream); - if (ret == GST_FLOW_LOST_SYNC) - goto done; - } - - if (G_UNLIKELY (!stream->pes_buffer)) { - /* set initial size of PES buffer */ - if (G_UNLIKELY (stream->pes_buffer_size == 0)) - stream->pes_buffer_size = MPEGTS_MIN_PES_BUFFER_SIZE; - - stream->pes_buffer = gst_buffer_new_and_alloc (stream->pes_buffer_size); - stream->pes_buffer_used = 0; - } - out_data = GST_BUFFER_DATA (stream->pes_buffer) + stream->pes_buffer_used; -#ifdef USE_LIBOIL - oil_memcpy (out_data, in_data, in_size); -#else - memcpy (out_data, in_data, in_size); -#endif - stream->pes_buffer_used += in_size; -done: - return ret; -} - -static FORCE_INLINE GstFlowReturn -gst_mpegts_demux_pes_buffer_flush (GstMpegTSDemux * demux) -{ - gint i; - GstFlowReturn ret = GST_FLOW_OK; - - for (i = 0; i < MPEGTS_MAX_PID + 1; i++) { - GstMpegTSStream *stream = demux->streams[i]; - if (stream && stream->pad) { - gst_mpegts_stream_pes_buffer_flush (stream); - stream->pes_buffer_in_sync = FALSE; - } - } - return ret; -} - -static FORCE_INLINE GstFlowReturn -gst_mpegts_demux_push_fragment (GstMpegTSStream * stream, - const guint8 * in_data, guint in_size) -{ - GstFlowReturn ret; - GstBuffer *es_buf = gst_buffer_new_and_alloc (in_size); -#ifdef USE_LIBOIL - oil_memcpy (GST_BUFFER_DATA (es_buf), in_data, in_size); -#else - memcpy (GST_BUFFER_DATA (es_buf), in_data, in_size); -#endif - ret = gst_pes_filter_push (&stream->filter, es_buf); - - /* If PES filter return ok then PES fragment buffering - * can be enabled */ - if (ret == GST_FLOW_OK) - stream->pes_buffer_in_sync = TRUE; - else if (ret == GST_FLOW_LOST_SYNC) - stream->pes_buffer_in_sync = FALSE; - return ret; -} - -/* - * transport_packet(){ - * sync_byte 8 bslbf == 0x47 - * transport_error_indicator 1 bslbf - * payload_unit_start_indicator 1 bslbf - * transport _priority 1 bslbf - * PID 13 uimsbf - * transport_scrambling_control 2 bslbf - * adaptation_field_control 2 bslbf - * continuity_counter 4 uimsbf - * if(adaptation_field_control=='10' || adaptation_field_control=='11'){ - * adaptation_field() - * } - * if(adaptation_field_control=='01' || adaptation_field_control=='11') { - * for (i=0;i<N;i++){ - * data_byte 8 bslbf - * } - * } - * } - */ -static FORCE_INLINE GstFlowReturn -gst_mpegts_demux_parse_stream (GstMpegTSDemux * demux, GstMpegTSStream * stream, - const guint8 * in_data, guint in_size) -{ - GstFlowReturn ret; - gboolean transport_error_indicator; - gboolean payload_unit_start_indicator; - gboolean transport_priority; - guint16 PID; - guint8 transport_scrambling_control; - guint8 adaptation_field_control; - guint8 continuity_counter; - const guint8 *data = in_data; - guint datalen = in_size; - - transport_error_indicator = (data[0] & 0x80) == 0x80; - payload_unit_start_indicator = (data[0] & 0x40) == 0x40; - transport_priority = (data[0] & 0x20) == 0x20; - PID = stream->PID; - transport_scrambling_control = (data[2] & 0xc0) >> 6; - adaptation_field_control = (data[2] & 0x30) >> 4; - continuity_counter = data[2] & 0x0f; - - data += 3; - datalen -= 3; - - GST_DEBUG_OBJECT (demux, "afc 0x%x, pusi %d, PID 0x%04x datalen %u", - adaptation_field_control, payload_unit_start_indicator, PID, datalen); - - ret = GST_FLOW_OK; - - /* packets with adaptation_field_control == 0 must be skipped */ - if (adaptation_field_control == 0) - goto skip; - - /* parse adaption field if any */ - if (adaptation_field_control & 0x2) { - guint consumed; - - if (!gst_mpegts_demux_parse_adaptation_field (stream, data, - datalen, &consumed)) - goto done; - - if (datalen <= consumed) - goto too_small; - - data += consumed; - datalen -= consumed; - GST_DEBUG_OBJECT (demux, "consumed: %u datalen: %u", consumed, datalen); - } - - /* If this packet has a payload, handle it */ - if (adaptation_field_control & 0x1) { - GST_DEBUG_OBJECT (demux, "Packet payload %d bytes, PID 0x%04x", datalen, - PID); - - /* For unknown streams, check if the PID is in the partial PIDs - * list as an elementary stream and override the type if so - */ - if (stream->PID_type == PID_TYPE_UNKNOWN) { - if (mpegts_is_elem_pid (demux, PID)) { - GST_DEBUG_OBJECT (demux, - "PID 0x%04x is an elementary stream in the PID list", PID); - stream->PID_type = PID_TYPE_ELEMENTARY; - stream->flags |= MPEGTS_STREAM_FLAG_STREAM_TYPE_UNKNOWN; - stream->base_time = 0; - stream->last_time = 0; - - /* Clear any existing descriptor */ - if (stream->ES_info) { - gst_mpeg_descriptor_free (stream->ES_info); - stream->ES_info = NULL; - } - - /* Initialise our PES filter */ - gst_pes_filter_init (&stream->filter, NULL, NULL); - gst_pes_filter_set_callbacks (&stream->filter, - (GstPESFilterData) gst_mpegts_demux_data_cb, - (GstPESFilterResync) gst_mpegts_demux_resync_cb, stream); - } - } - - /* now parse based on the stream type */ - switch (stream->PID_type) { - case PID_TYPE_PROGRAM_ASSOCIATION: - case PID_TYPE_CONDITIONAL_ACCESS: - case PID_TYPE_PROGRAM_MAP: - case PID_TYPE_PRIVATE_SECTION: - { - GstBuffer *sec_buf; - guint8 *section_data; - guint16 section_length; - guint8 pointer; - - /* do stuff with our section */ - if (payload_unit_start_indicator) { - pointer = *data++; - datalen -= 1; - if (pointer >= datalen) { - GST_DEBUG_OBJECT (demux, "pointer: 0x%02x too large", pointer); - return GST_FLOW_OK; - } - data += pointer; - datalen -= pointer; - } - - /* FIXME: try to use data directly instead of creating a buffer and - pushing in into adapter at section filter */ - sec_buf = gst_buffer_new_and_alloc (datalen); -#ifdef USE_LIBOIL - oil_memcpy (GST_BUFFER_DATA (sec_buf), data, datalen); -#else - memcpy (GST_BUFFER_DATA (sec_buf), data, datalen); -#endif - if (gst_section_filter_push (&stream->section_filter, - payload_unit_start_indicator, continuity_counter, sec_buf)) { - GST_DEBUG_OBJECT (demux, "section finished"); - /* section ready */ - section_length = stream->section_filter.section_length; - section_data = - (guint8 *) gst_adapter_peek (stream->section_filter.adapter, - section_length + 3); - - switch (stream->PID_type) { - case PID_TYPE_PROGRAM_ASSOCIATION: - gst_mpegts_stream_parse_pat (stream, section_data, - section_length + 3); - break; - case PID_TYPE_CONDITIONAL_ACCESS: - gst_mpegts_stream_parse_cat (stream, section_data, - section_length + 3); - break; - case PID_TYPE_PROGRAM_MAP: - gst_mpegts_stream_parse_pmt (stream, section_data, - section_length + 3); - break; - case PID_TYPE_PRIVATE_SECTION: - gst_mpegts_stream_parse_private_section (stream, section_data, - section_length + 3); - break; - } - - gst_section_filter_clear (&stream->section_filter); - - } else { - /* section still going, don't parse left */ - GST_DEBUG_OBJECT (demux, "section still going for PID 0x%04x", PID); - } - break; - } - case PID_TYPE_NULL_PACKET: - GST_DEBUG_OBJECT (demux, - "skipping PID 0x%04x, type 0x%04x (NULL packet)", PID, - stream->PID_type); - break; - case PID_TYPE_UNKNOWN: - GST_DEBUG_OBJECT (demux, "skipping unknown PID 0x%04x, type 0x%04x", - PID, stream->PID_type); - break; - case PID_TYPE_ELEMENTARY: - { - if (payload_unit_start_indicator) { - GST_DEBUG_OBJECT (demux, "new PES start for PID 0x%04x, used %u" - "bytes of %u bytes in the PES buffer", - PID, stream->pes_buffer_used, stream->pes_buffer_size); - /* Flush buffered PES data */ - gst_mpegts_stream_pes_buffer_flush (stream); - gst_pes_filter_drain (&stream->filter); - /* Resize the buffer to half if no overflow detected and - * had been used less than half of it */ - if (stream->pes_buffer_overflow == FALSE - && stream->pes_buffer_used < (stream->pes_buffer_size >> 1)) { - stream->pes_buffer_size >>= 1; - if (stream->pes_buffer_size < MPEGTS_MIN_PES_BUFFER_SIZE) - stream->pes_buffer_size = MPEGTS_MIN_PES_BUFFER_SIZE; - GST_DEBUG_OBJECT (demux, "PES buffer size reduced to %u bytes", - stream->pes_buffer_size); - } - /* mark the stream not in sync to give a chance on PES filter to - * detect lost sync */ - stream->pes_buffer_in_sync = FALSE; - stream->pes_buffer_overflow = FALSE; - } - GST_LOG_OBJECT (demux, "Elementary packet of size %u for PID 0x%04x", - datalen, PID); - - if (datalen > 0) { - if (!stream->pes_buffer_in_sync) { - /* Push the first fragment to PES filter to have a chance to - * detect GST_FLOW_LOST_SYNC. - */ - GST_LOG_OBJECT (demux, "fragment directly pushed to PES filter"); - ret = gst_mpegts_demux_push_fragment (stream, data, datalen); - } else { - /* Otherwhise we buffer the PES fragment */ - ret = gst_mpegts_stream_pes_buffer_push (stream, data, datalen); - /* If sync is lost here is due a pes_buffer_flush and we can try - * to resync in the PES filter with the current fragment - */ - if (ret == GST_FLOW_LOST_SYNC) { - GST_LOG_OBJECT (demux, "resync, fragment pushed to PES filter"); - ret = gst_mpegts_demux_push_fragment (stream, data, datalen); - } - } - - break; - } else { - GST_WARNING_OBJECT (demux, "overflow of datalen: %u so skipping", - datalen); - return GST_FLOW_OK; - } - - } - } - } - -done: - return ret; - -skip: - { - GST_DEBUG_OBJECT (demux, "skipping, adaptation_field_control == 0"); - return GST_FLOW_OK; - } -too_small: - { - GST_DEBUG_OBJECT (demux, "skipping, adaptation_field consumed all data"); - return GST_FLOW_OK; - } -} - -static FORCE_INLINE GstFlowReturn -gst_mpegts_demux_parse_transport_packet (GstMpegTSDemux * demux, - const guint8 * data) -{ - GstFlowReturn ret; - guint16 PID; - GstMpegTSStream *stream; - - /* skip sync byte */ - data++; - - /* get PID */ - PID = ((data[0] & 0x1f) << 8) | data[1]; - - /* get the stream. */ - stream = gst_mpegts_demux_get_stream_for_PID (demux, PID); - - /* parse the stream */ - ret = gst_mpegts_demux_parse_stream (demux, stream, data, - MPEGTS_NORMAL_TS_PACKETSIZE - 1); - - return ret; - - /* ERRORS */ -} - -static gboolean -gst_mpegts_demux_send_event (GstMpegTSDemux * demux, GstEvent * event) -{ - gint i; - gboolean have_stream = FALSE, res = TRUE; - - for (i = 0; i < MPEGTS_MAX_PID + 1; i++) { - GstMpegTSStream *stream = demux->streams[i]; - - if (stream && stream->pad) { - res &= gst_pad_push_event (stream->pad, gst_event_ref (event)); - have_stream = TRUE; - } - } - gst_event_unref (event); - - return have_stream; -} - -static gboolean -gst_mpegts_demux_sink_event (GstPad * pad, GstEvent * event) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (gst_pad_get_parent (pad)); - gboolean res; - - GST_DEBUG_OBJECT (demux, "got event %s", - gst_event_type_get_name (GST_EVENT_TYPE (event))); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_FLUSH_START: - res = gst_mpegts_demux_send_event (demux, event); - break; - case GST_EVENT_FLUSH_STOP: - gst_adapter_clear (demux->adapter); - res = gst_mpegts_demux_send_event (demux, event); - break; - case GST_EVENT_EOS: - /* Flush buffered PES data */ - gst_mpegts_demux_pes_buffer_flush (demux); - /* Send the EOS event on each stream */ - if (!(res = gst_mpegts_demux_send_event (demux, event))) { - /* we have no streams */ - GST_ELEMENT_ERROR (demux, STREAM, TYPE_NOT_FOUND, - (NULL), ("No valid streams found at EOS")); - } - break; - case GST_EVENT_NEWSEGMENT: - res = gst_mpegts_demux_send_event (demux, event); - break; - default: - res = gst_mpegts_demux_send_event (demux, event); - break; - } - gst_object_unref (demux); - - return TRUE; -} - -static gboolean -gst_mpegts_demux_provides_clock (GstElement * element) -{ - GstMpegTSDemux *demux; - GstQuery *query; - gboolean is_live = FALSE; - GstPad *peer; - - demux = GST_MPEGTS_DEMUX (element); - query = gst_query_new_latency (); - peer = gst_pad_get_peer (demux->sinkpad); - - if (peer) { - if (gst_pad_query (peer, query)) - gst_query_parse_latency (query, &is_live, NULL, NULL); - gst_object_unref (peer); - } - gst_query_unref (query); - - return is_live; -} - -static GstClock * -gst_mpegts_demux_provide_clock (GstElement * element) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (element); - - if (gst_mpegts_demux_provides_clock (element)) { - if (demux->clock == NULL) { - demux->clock = g_object_new (GST_TYPE_SYSTEM_CLOCK, "name", - "MpegTSClock", NULL); - demux->clock_base = GST_CLOCK_TIME_NONE; - } - - return demux->clock; - } - - return NULL; -} - -static gboolean -gst_mpegts_demux_src_pad_query (GstPad * pad, GstQuery * query) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (gst_pad_get_parent (pad)); - gboolean res = FALSE; - GstPad *peer; - - switch (GST_QUERY_TYPE (query)) { - case GST_QUERY_LATENCY: - { - peer = gst_pad_get_peer (demux->sinkpad); - if (peer) { - res = gst_pad_query (peer, query); - if (res) { - gboolean is_live; - GstClockTime min_latency, max_latency; - - gst_query_parse_latency (query, &is_live, &min_latency, &max_latency); - if (is_live) { - min_latency += TS_LATENCY * GST_MSECOND; - if (max_latency != GST_CLOCK_TIME_NONE) - max_latency += TS_LATENCY * GST_MSECOND; - } - - gst_query_set_latency (query, is_live, min_latency, max_latency); - } - gst_object_unref (peer); - } - break; - } - case GST_QUERY_DURATION: - { - GstFormat format; - gint64 duration; - - gst_query_parse_duration (query, &format, &duration); - - if (format == GST_FORMAT_BYTES) { - res = FALSE; - } else { - res = gst_pad_query_default (pad, query); - } - - break; - } - default: - res = gst_pad_query_default (pad, query); - } - - return res; -} - - -static FORCE_INLINE gint -is_mpegts_sync (const guint8 * in_data, const guint8 * end_data, - guint packetsize) -{ - guint ret = 0; - if (G_LIKELY (IS_MPEGTS_SYNC (in_data))) - return 100; - - if (in_data + packetsize < end_data - 5) { - if (G_LIKELY (IS_MPEGTS_SYNC (in_data + packetsize))) - ret += 50; - } - - if (in_data[0] == 0x47) { - ret += 25; - - if ((in_data[1] & 0x80) == 0x00) - ret += 10; - - if ((in_data[3] & 0x10) == 0x10) - ret += 5; - } - return ret; -} - - -static FORCE_INLINE guint -gst_mpegts_demux_sync_scan (GstMpegTSDemux * demux, const guint8 * in_data, - guint size, guint * flush) -{ - guint sync_count = 0; - const guint8 *end_scan = in_data + size - demux->packetsize; - guint8 *ptr_data = (guint8 *) in_data; - - /* Check if the LUT table is big enough */ - if (G_UNLIKELY (demux->sync_lut_len < (size / MPEGTS_NORMAL_TS_PACKETSIZE))) { - demux->sync_lut_len = size / MPEGTS_NORMAL_TS_PACKETSIZE; - if (demux->sync_lut) - g_free (demux->sync_lut); - demux->sync_lut = g_new0 (guint8 *, demux->sync_lut_len); - GST_DEBUG_OBJECT (demux, "created sync LUT table with %u entries", - demux->sync_lut_len); - } - - while (ptr_data <= end_scan && sync_count < demux->sync_lut_len) { - /* if sync code is found try to store it in the LUT */ - guint chance = is_mpegts_sync (ptr_data, end_scan, demux->packetsize); - if (G_LIKELY (chance > 50)) { - /* skip paketsize bytes and try find next */ - guint8 *next_sync = ptr_data + demux->packetsize; - if (next_sync < end_scan) { - demux->sync_lut[sync_count] = ptr_data; - sync_count++; - ptr_data += demux->packetsize; - } else - goto done; - - } else { - ptr_data++; - } - } -done: - *flush = ptr_data - in_data; - - return sync_count; -} - -static GstFlowReturn -gst_mpegts_demux_chain (GstPad * pad, GstBuffer * buffer) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (gst_pad_get_parent (pad)); - GstFlowReturn ret = GST_FLOW_OK; - const guint8 *data; - guint avail; - guint flush = 0; - gint i; - guint sync_count; - - if (GST_BUFFER_IS_DISCONT (buffer)) { - /* Flush buffered PES data */ - gst_mpegts_demux_pes_buffer_flush (demux); - gst_adapter_clear (demux->adapter); - } - /* first push the new buffer into the adapter */ - gst_adapter_push (demux->adapter, buffer); - - /* check if there's enough data to parse a packet */ - avail = gst_adapter_available (demux->adapter); - if (G_UNLIKELY (avail < demux->packetsize)) - goto done; - - /* recover all data from adapter */ - data = gst_adapter_peek (demux->adapter, avail); - - /* scan for sync codes */ - sync_count = gst_mpegts_demux_sync_scan (demux, data, avail, &flush); - - /* process all packets */ - for (i = 0; i < sync_count; i++) { - ret = gst_mpegts_demux_parse_transport_packet (demux, demux->sync_lut[i]); - if (G_UNLIKELY (ret == GST_FLOW_LOST_SYNC)) { - ret = GST_FLOW_OK; - continue; - } - if (G_UNLIKELY (ret != GST_FLOW_OK)) { - flush = demux->sync_lut[i] - data + demux->packetsize; - flush = MIN (avail, flush); - goto done; - } - } - -done: - /* flush processed data */ - if (flush) { - GST_DEBUG_OBJECT (demux, "flushing %d/%d", flush, avail); - gst_adapter_flush (demux->adapter, flush); - } - - gst_object_unref (demux); - - return ret; -} - -static GstStateChangeReturn -gst_mpegts_demux_change_state (GstElement * element, GstStateChange transition) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (element); - GstStateChangeReturn result; - - - switch (transition) { - case GST_STATE_CHANGE_NULL_TO_READY: - demux->adapter = gst_adapter_new (); - break; - case GST_STATE_CHANGE_READY_TO_PAUSED: - break; - default: - break; - } - - result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - gst_mpegts_demux_reset (demux); - break; - case GST_STATE_CHANGE_READY_TO_NULL: - g_object_unref (demux->adapter); - if (demux->sync_lut) - g_free (demux->sync_lut); - demux->sync_lut = NULL; - demux->sync_lut_len = 0; - break; - default: - break; - } - - return result; -} - -static GValueArray * -mpegts_demux_build_pat_info (GstMpegTSDemux * demux) -{ - GValueArray *vals = NULL; - GstMpegTSPAT *PAT; - gint i; - - g_return_val_if_fail (demux->streams[0] != NULL, NULL); - g_return_val_if_fail (demux->streams[0]->PID_type == - PID_TYPE_PROGRAM_ASSOCIATION, NULL); - - PAT = &(demux->streams[0]->PAT); - vals = g_value_array_new (PAT->entries->len); - - for (i = 0; i < PAT->entries->len; i++) { - GstMpegTSPATEntry *cur_entry = - &g_array_index (PAT->entries, GstMpegTSPATEntry, i); - GValue v = { 0, }; - MpegTsPatInfo *info_obj; - - info_obj = mpegts_pat_info_new (cur_entry->program_number, cur_entry->PID); - - g_value_init (&v, G_TYPE_OBJECT); - g_value_take_object (&v, info_obj); - g_value_array_append (vals, &v); - } - return vals; -} - -static MpegTsPmtInfo * -mpegts_demux_build_pmt_info (GstMpegTSDemux * demux, guint16 pmt_pid) -{ - MpegTsPmtInfo *info_obj; - GstMpegTSPMT *PMT; - gint i; - - g_return_val_if_fail (demux->streams[pmt_pid] != NULL, NULL); - g_return_val_if_fail (demux->streams[pmt_pid]->PID_type == - PID_TYPE_PROGRAM_MAP, NULL); - - PMT = &(demux->streams[pmt_pid]->PMT); - - info_obj = mpegts_pmt_info_new (PMT->program_number, PMT->PCR_PID, - PMT->version_number); - - for (i = 0; i < PMT->entries->len; i++) { - GstMpegTSStream *stream; - MpegTsPmtStreamInfo *stream_info; - GstMpegTSPMTEntry *cur_entry = - &g_array_index (PMT->entries, GstMpegTSPMTEntry, i); - - stream = demux->streams[cur_entry->PID]; - stream_info = - mpegts_pmt_stream_info_new (cur_entry->PID, stream->stream_type); - - if (stream->ES_info) { - int i; - - /* add languages */ - guint8 *iso639_languages = - gst_mpeg_descriptor_find (stream->ES_info, DESC_ISO_639_LANGUAGE); - if (iso639_languages) { - for (i = 0; i < DESC_ISO_639_LANGUAGE_codes_n (iso639_languages); i++) { - gchar *language_n = (gchar *) - DESC_ISO_639_LANGUAGE_language_code_nth (iso639_languages, i); - mpegts_pmt_stream_info_add_language (stream_info, - g_strndup (language_n, 3)); - } - } - - for (i = 0; i < gst_mpeg_descriptor_n_desc (stream->ES_info); ++i) { - guint8 *desc = gst_mpeg_descriptor_nth (stream->ES_info, i); - - /* add the whole descriptor, tag + length + DESC_LENGTH bytes */ - mpegts_pmt_stream_info_add_descriptor (stream_info, - (gchar *) desc, 2 + DESC_LENGTH (desc)); - } - } - mpegts_pmt_info_add_stream (info_obj, stream_info); - } - return info_obj; -} - -static void -gst_mpegts_demux_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (object); - gchar **pids; - guint num_pids; - int i; - - switch (prop_id) { - case PROP_ES_PIDS: - pids = g_strsplit (g_value_get_string (value), ":", -1); - num_pids = g_strv_length (pids); - if (num_pids > 0) { - demux->elementary_pids = g_new0 (guint16, num_pids); - demux->nb_elementary_pids = num_pids; - for (i = 0; i < num_pids; i++) { - demux->elementary_pids[i] = strtol (pids[i], NULL, 0); - GST_INFO ("partial TS ES pid %d", demux->elementary_pids[i]); - } - } - g_strfreev (pids); - break; - case PROP_CHECK_CRC: - demux->check_crc = g_value_get_boolean (value); - break; - case PROP_PROGRAM_NUMBER: - demux->program_number = g_value_get_int (value); - break; - case PROP_M2TS: - demux->m2ts_mode = g_value_get_boolean (value); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -gst_mpegts_demux_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstMpegTSDemux *demux = GST_MPEGTS_DEMUX (object); - int i; - - switch (prop_id) { - case PROP_ES_PIDS: - if (demux->nb_elementary_pids == 0) { - g_value_set_static_string (value, ""); - } else { - gchar **ts_pids; - - ts_pids = g_new0 (gchar *, demux->nb_elementary_pids + 1); - for (i = 0; i < demux->nb_elementary_pids; i++) { - ts_pids[i] = g_strdup_printf ("%d", demux->elementary_pids[i]); - } - - g_value_set_string (value, g_strjoinv (":", ts_pids)); - g_strfreev (ts_pids); - } - break; - case PROP_CHECK_CRC: - g_value_set_boolean (value, demux->check_crc); - break; - case PROP_PROGRAM_NUMBER: - g_value_set_int (value, demux->program_number); - break; - case PROP_PAT_INFO: - { - if (demux->streams[0] != NULL) { - g_value_take_boxed (value, mpegts_demux_build_pat_info (demux)); - } - break; - } - case PROP_PMT_INFO: - { - if (demux->current_PMT != 0 && demux->streams[demux->current_PMT] != NULL) { - g_value_take_object (value, mpegts_demux_build_pmt_info (demux, - demux->current_PMT)); - } - break; - } - case PROP_M2TS: - g_value_set_boolean (value, demux->m2ts_mode); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -gboolean -gst_mpegts_demux_plugin_init (GstPlugin * plugin) -{ - if (!gst_element_register (plugin, "mpegtsdemux", - GST_RANK_PRIMARY, GST_TYPE_MPEGTS_DEMUX)) - return FALSE; - - return TRUE; -} |